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Posted (edited)

4 April 2024

This morning I started up my truck to let it warm-up. I Loaded a few boxes that I needed to take to my parents’ house. I Jumped in, drove down the driveway, turned left on the dirt road and headed for the unguarded railroad crossing that I drive over every day. I slowed down to verify that the track was clear, barely crawling up the raised track bed that is an obstacle to tractor trailers, it keeps them from driving down our road. As my 2019 GMC Sierra AT4 crested the small hill and was sitting on top of the railroad tracks I pressed down on the gas and the truck didn’t move. The 6.2L engine was at 2,000 RPM and there I sat fully exposed to whatever train decided to hit me. People only breakdown on the railroad tracks in the movies right. I sat in the driver’s seat stressing about how to get my broken yet otherwise undamaged truck off the tracks. So, I turned the truck off and turned it back on again hoping that it was a computer glitch and not the Transmission. The 6.2L engine roared to life and I put it in gear, the engine sounded great even with 75,000 miles on it. As I turned gasoline into exhaust the truck stood like a monument on the top of those tracks. I tried putting the truck in reverse and there was movement. I was able to back the truck off the tracks. In my moment of euphoria, I put the truck back into drive knowing that reverse had somehow solved the problem, this time the truck failed to climb up the little rise. At this point in the story, I would like to let everyone know that the side mirrors and the camera on the tailgate were in good working order. The truck drove just like it should at 10 mph in reverse all the way back to my house. The good news is that I will have the truck paid off in a couple more months.

 

It’s a good-looking truck I ordered it from the factory in December of 2018 I wanted a dark blue truck and there were none available in my area at the time. I opted for the 6.2L engine, because why not, eliminated the sunroof and the seat vibrator (Lane Departure warning) and then I waited and waited. When it finally arrived at the dealer in May 2019 it was love at first sight. It has been my daily driver ever since.

 

I would like to replace this transmission with an improved version. any suggestions are appreciated. This vehicle tow's The Boy Scout troop trailer every once in a while.

Edited by BlueAT4
  • BlueAT4 changed the title to A day in the life of my truck
Posted

I wouldn't be so sure it was a mechanical failure of the transmission.  Take it to a reputable transmission shop and see what the think, solenoids and valve bodies can create funky symptoms and quirks.  If it requires a rebuild, then rebuild the transmission and keep on keeping on.  The transmission is not a hard removal/installation and can be done in a day.

  • Like 1
Posted

2019s had a lot of problems with transmissions. Sounds like yours worked good up until it was railroaded. Sorry, I had to do it. If you have the manual shift feature, give it a try. See if it moves forward. I'm sure you already checked the fluid level. Keep us posted please. 

  • Haha 1
Posted

UPDATE,

 

I Start my truck this morning and put it in gear, the truck moved forwarded under its own power. The engine light is still on, I did not have the time to dig any deeper before going to work. I am wondering if I have a fluid leak. It could be a low Transmission fluid level issue.

Posted
10 hours ago, BlueAT4 said:

UPDATE,

 

I Start my truck this morning and put it in gear, the truck moved forwarded under its own power. The engine light is still on, I did not have the time to dig any deeper before going to work. I am wondering if I have a fluid leak. It could be a low Transmission fluid level issue.

Glad to hear you are moving again. I would take it into a dealer or a trusted transmission shop and have it looked at/repaired. So that you know the 10 speed trans. is the best of the 3 (10 speed, 8 speed or 6 speed). They all have had some problems but the 10 speed is the best trans. if the truck is still in good shape it would be worth repairing.

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